The Equations $x=\frac{9}{\pi} \cos (\pi / 180), y=\frac{9}{\pi} \sin (\pi / 180)$

Short Answer

The equations $x=\frac{9}{\pi} \cos (\pi / 180), y=\frac{9}{\pi} \sin (\pi / 180)$ describe the motion of a particle moving on a circle.Assume x and y are in miles and t is in days.What is the speed of the particle (in miles per day)when it passes through the point (-9/ $\pi$ , 0)? Round to 3 decimal places.